Self-heating sadiron



DerN 22, 1936. C. A, HOFF A y 2,065,492

SELF HEATING SADIRON Filed Feb. 28, 1934 2 Sheets-'Sheet 2 ATTO RNEYS Patented Dec. 22, 1936 UNITED STATES PATENT OFFICE SELF-HEATING SADIRON ration of Ohio Application February 28, 1934, Serial No. 713,255

7 Claims.

This invention relates to improvements in selfheating sadirons, particularly of the type which is heated by the combustion of gasoline or other combustible uid, although certain features of the invention may be extended to the construction of irons heated by electricity.

One of the objects of the invention is to provide an iron of the type heated by gasoline or the like so that the iron may be placed on end or in raised position when not in use. Heretofore irons heated by gasoline were provided with a reservoir carried on the rear of the iron which rprevented it from being turned up when out of use temporarily. The usual electric irons are provided with an attached bracket which serves as a stand upon which the iron rests, and it is one of the features of the invention to construct an iron of the gasoline heating type which can be set up in similar fashion during a pause in the ironing. 'I'his purpose makes it essential that the construction and organization of the ,iron be completely changed and modified.

Another purpose of the invention is to provide a new and improved construction by which the needle may be removed quickly and easily for the purpose of cleaning.

Further objects are an improved organization whereby the handle is insulated from the body of the iron, and the construction and mode of attachment of the base to the body whereby it can be easily removed and reattached so that the inner or working parts of the iron are readily accessible for inspection and cleaning, and further so as to enable this element to be plated and nished separately from the body.

These and other objects and advantages will become evident from the detailed description and drawings which show the best known or preferred form of the invention, it being understood that changes and modifications may be made therein,

within the scope of the invention as set forth in the claims.

In the drawings,

Figure l is a side elevation of the improved. iron, the handle being shown in Vertical crosssection;

Figure 2 is a plan view of the iron;

Figure 3 is a vertical transverse section on the line 3-3 of Figure 1, looking toward the rear of the iron;

Figure 4 is a similar section on the line 4 4 of Figure l, lookingV toward the front of the iron;

Figure 5 is an enlarged detail section of the feeder and vaporizing tube;

(Cl. 15S-23.2)

Figure 6 is a detailed section of the handle attachment on the line 6 6 of Figure 1;

Figures 7 and 8 are detailed views of the attachment of the handle and reservoir;

Figure 9 is a detailed section of the mixing chamber;

Figure 10 is a detail of valve-control handle on the line Ill-I0 of Figure 5.

Figure 11 is a. detail sectional View of the reser- Voir shown without supporting bosses. 0

The iron comprises a main casting or body I which is of the usual shape of a sadiron and is hollow to accommodate the burner. On the inner forward end of the body is a pin 2 and on the rear of the body is a fastening screw or pin 3. The Vbase of the iron is indicated at 4 and is provided with an upstanding flange 5, which, with the hollowed out central portion 6 of the base constitutes a chamber in which combustion occurs. The flange serves as a shield about the 0 flame from the air-entering the chamber through openings 8 in the lower edge of the body. The front of the flange is formed with a slot or recess to receive the pin 2. The rear of the flange is provided with a threaded hole to receive the 25 screw 3. By withdrawing the screw the base can be removed from the body, there being enough play between the body and the base to free the pin 2. By constructing the base so that it is easily removed and replaced the interior of the iron may readily be inspected and cleaned. Furthermore it is possible to electroplate and iinish the base as a separate element, thereby improving and cheapening the manufacture of the iron. The handle is indicated, as a whole, by the numeral I5 and consists of a wooden grip element I 6 which is hollow throughout to accommodate a llingtube I1 accessible at the forward end and closed by a cap I8, the interior of which is screw threaded to t over the enlarged screw threaded end of a removable plug 20, the inner end of which is reduced and screwed into the tube. A nut 2| surrounds the plug and serves to hold in position a block of heat insulating mavterial 22 which is set in a recess in the forward seating fit with a corresponding seat in the valve member. When the air within the reservoir is under operative pressure, the plug is screwed home, but when the pressure is to be increased the plug is relaxed and is connected to the delivery end of a pump or the like.

At the rear of the grip 6, the tube |1 is extended and screw threaded to receive the upper end of the fuel reservoir 3B. This reservoir is preferably substantially triangular and fiat on its rear face, although its shape may be varied, and extends downwardly at the rear of the iron to a point near the body. The usual reservoir on irons of this type is a ball carried upon a bracket at the rear of the iron and lled from the top. Not only is this awkward but it makes it impossible to stand the iron in a substantially vertical position upon its end when temporarily out of use. With these irons it has hitherto been necessary to provide a stand upon which the iron is placed during a pause in the ironing. The natural movement of the ironer is to stand the iron on end, and so far as known to me the present construction is the first by which it is possible to do this with an iron heated by liquid fuel.

The rear face of the reservoir, as shown, inclines outwardly and downwardly and is provided at its lower rear edge with a flange 3| which is at right angles to the axis of the iron. Near the top of the reservoir are two studs 32 which with the flange form a rest upon which the iron may be placed while temporarily out of use. It is obvious that this particular arrangement and de sign is not essential and that the side of the reservoir may be flat, as shown in Figure 11, or other means provided whereby the iron may be rested in tilted or upright position. The position of the reservoir assures the substantially upright position of the iron. Housewives are apt to forget to place the iron on a stand and thus scorch the clothes or ironing board. By redesigning the iron and altering the usual and accepted construction of irons of this type so that it may be stood in the manner described the sadiron of the burner type is greatly improved.

The handle and reservoir are secured to the base by a single curved strap 35, the forward end of which is bent upwardly and received in the insulation plate 22. The central portion of the strap is received on two posts 36 rising from the body I and held in position by a long screw 31 at the front and a short screw 38 at the rear. The long screw serves as a means for holding the burner and mixing chamber in position. The rear end of the strap is oifset and notched as at 40 with a keyhole shaped slot to be received over a screw threaded post 4| on the underside of the reservoir, a nut 42 being received over the post and having a circular extension received in the enlarged bore of the slot 4U. By the construction described, the handle and reservoir are adequately insulated from the hot body of the iron, and the reservoir serves as a connector between the handle and body of the iron.

At one sideof the lower end of the reservoir or lfount 30 is located the discharge opening 45 which is preferably formed as a depressed boss in which is received the upstanding feed pipe 46 formed as a branch of the T-shaped coupling 48. A threaded sleeve 49 and gasket 5U resting against a iiange 5| on the pipe 46 hold the coupling in place.

An elbow 59 which extends at its open end to the base of the fount conducts the fuel to the outlet. This assures the feed t0 the burner when the iron is in upright position as it takes fuel from the deepest point in the fount when the iron is standing in idle position.

The coupling is formed with a through passage restricted at 52 to provide a Valve seat. At the rear of this seat is a screw-threaded valve 54, the fuel passing around the threads and through the valve, which is adjusted so as to regulate the flame. The valve is extended rearwardly and provided at its rear end with a collar 55 to which is secured the knurled handle 56. A plug 51 and packing glands 58 surround the valve and make a fluid tight seal at this point.

To the forward end of the coupling 48 is screwed a thimble 60 in which is soldered the vaporizer tube 6| which extends to a point near the front of the iron where it discharges into a mixer to be described later. The discharge end of the vaporizer tube is closed by a diaphragm 62 in which is located the capillary opening through which the fuel is discharged. The needle 55 extends through the vaporizer tube and through the coupling to the rear where it passes beyond the valve 54 and is enlarged slightly. It is held in position by a cap 66. The forward end of the needle is reduced to enter the capillary opening in the diaphragm and is preferably provided with a slight taper. When the handle 56 is rotated the valve and needle move in unison in or out to regulate the flame at both the valve seat 52 and diaphragm 62. A coil 61 surrounds the needle in the vaporizer tube and serves to break up the flow of fuel so that it vaporizes more efficiently in the tube. The needle may be removed from the tube by the removal of the cap 66. This gives easy accessibility to the needle and permits its ready removal without disconnecting the iron. It is a very considerable advantage in irons of this type to have easy removability of the needle in the event that the passage becomes clogged.

The mixer for forming the combustible mixture of air and gasoline vapor and the burner are formed as a single casting and held in position principally by the long screw 31 which is tapped into the mixer casting 1U. 'Ihe interior of the casting is formed as a chamber 1| into which the fuel pipe 6| discharges. An air pipe 12 also discharges into the chamber. This pipe extends rearwardly to a point at the rear of the iron where it is secured in the outside of the body I. From the mixing chamber the burner extends rearwardly over the base of the iron. This burner 13 may be of any ordinary or usual construction, being shown as slotted to provide the burner openings 14 which direct the flame against the upper side of the base. From one side of the burner extends a nozzle 15, the end of which is perforated so that a flame plays against the fuel pipe 6| and thus serves to vaporize the fuel. Over the top of the burner and on top of the mixer is located a shield 16. A hole 18 in the side of the body is used for lighting the burner.

Although the construction is described in dey While some of the features are peculiar to a' fluid pressure burner, others such as the insulation of the handle and the removable base may be incorporated in an electrically heated iron.

What is claimed is:

1, A self-heating iron of the fluid burner type "*7'6 having a body, a handle, a reservoir forming a connection between the body and the handle, and means for supporting the iron located solely upon the reservoir.

2. A self-heating iron of the fluid burner type comprising a body, a burner within the body, a handle, a reservoir, at the rear of the iron and forming a connection between the body and the handle, iron rests formed upon the reservoir, a feed pipe leading from said reservoir to said burner, and an elbow disposed within said reservoir to supply fuel to said feed pipe from approximately the lowest point in the reservoir both in normal position and also when upon the rests.

3. A self-heating sadiron comprising a body, a fluid burner located Within the body, a handle, an enlarged reservoir for holding liquid fuel under pressure located at the rear of the iron and connecting the handle and the body, iron rests upon the reservoir adapted to support the iron when the body is elevated, and a fuel supply pipe leading to the burner from substantially the lowermost point of the reservoir in either operating or elevated position of the iron body.

4. A self-heating sadiron comprising a body, a uid burner located within the body, a handle, an enlarged reservoir for holding liquid fuel under pressure located at the rear of the iron and connectingthe handle and the body, the rear face of thereservoir being inclined downwardly and rearwardly, iron rests upon the rear face of the reservoir adapted to support the iron when the body is elevated, and a fuel supply 'pipe leading to the burner from substantially the lowermost point of the reservoir in either operating or elevated position of the iron body.

5. In a sadiron, a. body, a liquid fuel burner in the body, a handle, and an enlarged reservoir located at the rear of the iron and extending between the handle and the body and extending rearwardly of the body, the rear face of the reservoir being substantially flat and adapted to form an iron rest when the body is elevated.

6. In a sadiron, a body, a liquid fuel burner in the body, an enlarged reservoir located at the rear of the body adapted to hold fuel under pressure, the rear face of the reservoir serving as a support for the iron when the body is elevated, and a feed pipe leading from substantially the lowermost point in the reservoir in either position of the iron and delivering to the burner.

'7. In a sadiron, a body, a liquid fuel burner in the body, an enlarged unitary reservoir located at the rear of the body, a handle connected tothe upper end of the reservoir, a reservoir feed pipe extending longitudinally through the handle, a strap, the ends of which are connected to the base of the reservoir and the end of the handle, and means located intermediately of the strap to support the iron body.

CHESTER A. HOFF. 

